Julius haktmann



J. HARTMANN.

PL OW'S.

No. 194,428, Patented Aug. 21,1871.

N. PETERS; PHOTO-UTNDGRAPHER, WASHINGTON. D. C

UNITED STATES PATE T, OFFICE.

JULIUS HARTM'AN N, LOUISVILLE, KENTUCKY, ASSIGNOR OF ONE-HALF HIS RIGHTTO ANTON LAUER, on SAME PLACE.

IMPROVEMENT IN PLOWS.

. Specification forming part of Letters Patent No. 194.4%, dated August21,1877; application filed July 7, 1877.

To'all whomt't mag concern: v

Be it known that I, JULIUs HARTMANN, of Louisville, in the county of Jeiferson and State of Kentucky, have invented a new and usefulImprovement in Flows; and I do hereby declare that the following isafull, clear, and exact description of the same.

'This invention relates to certain improvements in the construction ofreversible or billside plows, more particularly those in which a doublemold-board vibrates about a horizontal pivot.

The objects aimed at are to reduce the weight andcost of such plowswithout lessening their strength, to increase their durability, andrender them easier to handle, and also of lighter draft by reason ofbeing so constructed as to have a center draft.

In the accompanying drawing, forming part of this specification, Figure1 is a side elevation of my improved plow. Fig. l is a detail view ofthe standard detached. Fig. 2 is a cross-section, giving a front view ofthe plow proper. Fig. 3 is a rear view of the plow. Fig. 4 is a sideview of the frame of theplow proper detached. Fig. 5 is a horizontalsection on line a: w, Fig. 4.

The handles H H are attached to the beam B in the usual way. Thestandard S of the plow consists of a flat bar or plate, 1), attached bybolts to the under side of the beam B, two vertical bars, I) b, and asleeve or spindlesocket, s, all of which are formed of cast malleableiron in one piece. The mold-board M, shares S, and center or colterpiece 0 are formed separately, and attached to the plowframe by bolts.Said frame consists of the two parallel land-sides L L, twoconnectingbars, I l, the rear one being straight and the front onecurved, corresponding to the form of the colter and mold-board, also theinclined sheth S. These parts, constituting the plowframe proper, are,like the standard S, formed in one piece of cast malleable iron, and forthe same purpose, namely, to secure the highest combination of cheapnessof production along with rigidity and a power to resist sharp orviolentblows which is not possessed by ordinary cast-iron.

In order that the mold-board, colter, and

shares and points, which are more subject to wear than other parts, maybe made as thin and light as possible consistently with the required'degree of durability. and also be enabled to resist sudden or severestrain, blows, concussions, 850., I form" them' from rolled steelplate;- They may, however, be formed of cast-steel with'good results.

It will be noted that the cutting-edge of the colter-pieceO projectslaterally from the standard, thus forming a center-draft plow, wherebythe land-side is relieved of friction and the plow made easier toreverse at the end of a furrow, since a portion of the Weight of thecombined mold-board, shares, and frame is thrown on the opposite side ofthe pivot. The pivot is a spindle, s, that passes through the socket s,and works in a detachable bearing, 12, attached to the rear bar t of theplowframe, and in a socket formed on the curved bar Z in rear of thecolter, so that it is out of the Way of the soil, in place of beingexposed, as in other plows--for example, that forming the subject ofLetters Patent No. 75,104, assigned to Lauer and Hartmann. The spindle sis held in the socket s by means of a screw, .70, or other suitabledevice, so that it may be easily detached when required for the purposeof substitution, repair of the plow, or for packing the same fortransportation or storage, or other purpose.

The curved or semicircular bar or brace B connects the shares S andmold-board M, as shown in Figs. 1 and 3, the same extending verticallyacross the front end of the moldboard, and being secured to it and theshares by screw-bolts. The brace thus serves to tie together or unitesaid parts, and to impart the required degree of rigidity. The remainingmeans for uniting and strengthening the moldboard and shares are theconcave sheth S and the V-shaped brace B, Whose arrangement is clearlyshown in Fig. 3.

I employ a T-headed lug or double catch, 0, for engaging with the pointsor shares of the plow proper or reversible mold-board on either side ofthe beam. Its special functions are to co-operate with the device forlocking the reversible mold-board, for holding the latter firmly in thedesired position for plowing,

and to aid in relieving the standard S and spindle s of part of thestrain incident to the operation of plowing. The standard and spindlecan, therefore, be made somewhat lighter than would be otherwisepracticable.

An ordinary book may be used for securing the reversible mold-board ineach of its two positions; but the device I employ is a springcatch,which is automatic in its action, and engages with the land-side whenthe moldboard is turned or reversed, and looks it against the standard.This greatly facilitates and lightens the labor of reversing themoldboard at the end of each furrow.

My improved plow is adapted for use in old or stubble land, as well asfor breaking new soil, and upon level land as well as hillsides.

What I claim is- 1. .In a reversible plow, the combination of theconcave sheth S, curved brace B, and v-shaped brace B with themold-board,

' shares, and frame, composed of the land-sides L and connecting-bars Zl,,a1l as shown and described.

2. In combination with a standard attached to the beam, the reversibleplow proper, composed of the mold-board, shares, land-sides, andlaterally-curved colter-piece, and a connecting and supporting frame,all constructed and arranged as shown and described, whereby the pivotsor spindle bearings are brought in rear of the inner side or edge of thecolter, and the plow made a center-draft, as specified.

3. In a reversible plow, the double springcatch projecting horizon tallyfrom the sides of the beam, to which it is fixedly attached, thevibrating frame carrying the mold-board, landsides, and shares, and thedouble or T-headed lug, all combined as shown and described, to operateas specified.

The above specification of my invention signed by me this 28th day ofJune, 1877.

V J. HARTMANN,

Witnesses: V

SoLoN U. KEMoN, CHAS. A. Pnrcrrr.

